Our company has one DNS Zone within a forest. Within our zone we have two sites each with two domain controllers. Site A DC1, DC2 and Site B DC1, DC2. We are having issues at the forest level, where our Master DC which resides in the UK has totally lost our Zone. Could the reasoning behind this be that Site A's Start of Authority for DC1 and DC2 all point to Site A DC1. Site B's Start of Authority for DC1 and DC2 point to Site B DC1. Should both sites be pointing to say Site A's DC1 versus pointing to each sites own DC1? I hope that wasn't a confusing explanation.